Odpowiedzi

2011-09-09T15:39:05+02:00

mr₁=2,25kg=2250g

Cp₁=5%

ms₁=?

 

Cp=ms/mr * 100%   /*mr

Cp*mr=ms*100%      /:100%

ms=Cp*mr/100%

 

ms₁=2250g*5%/100%

ms₁=112,5g

 

ms₂=ms₁=112,5g

Cp₂=2%

mr₂=?

mw=?

 

Cp=ms/mr * 100%   /*mr

Cp*mr=ms*100%      /:Cp

mr=ms*100%/Cp

 

mr₂=112,5g*100%/2%

mr₂=5625g=5,625kg

 

mw=mr₂-mw₁

mw=5,625kg-2,25kg

mw=3,375kg wody należy dolać